// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_RENDERER_MOJO_INTERFACE_PROVIDER_JS_WRAPPER_H_
#define CONTENT_RENDERER_MOJO_INTERFACE_PROVIDER_JS_WRAPPER_H_

#include <string>

#include "base/macros.h"
#include "content/common/content_export.h"
#include "gin/handle.h"
#include "gin/object_template_builder.h"
#include "gin/wrappable.h"
#include "mojo/public/cpp/system/message_pipe.h"
#include "v8/include/v8.h"

namespace service_manager {
class InterfaceProvider;
}

namespace content {

// A JS wrapper around service_manager::InterfaceProvider that allows connecting
// to
// remote services.
class CONTENT_EXPORT InterfaceProviderJsWrapper
    : public gin::Wrappable<InterfaceProviderJsWrapper> {
public:
    ~InterfaceProviderJsWrapper() override;
    static gin::Handle<InterfaceProviderJsWrapper> Create(
        v8::Isolate* isolate,
        v8::Handle<v8::Context> context,
        service_manager::InterfaceProvider* remote_interfaces);

    // gin::Wrappable<InterfaceProviderJsWrapper> overrides.
    gin::ObjectTemplateBuilder GetObjectTemplateBuilder(
        v8::Isolate* isolate) override;

    // JS interface implementation.
    void AddOverrideForTesting(const std::string& interface_name,
        v8::Local<v8::Function> interface_factory);
    void ClearOverridesForTesting();
    mojo::Handle GetInterface(const std::string& interface_name);

    static gin::WrapperInfo kWrapperInfo;
    static const char kPerFrameModuleName[];
    static const char kPerProcessModuleName[];

private:
    using ScopedJsFactory = v8::Persistent<v8::Function, v8::CopyablePersistentTraits<v8::Function>>;

    InterfaceProviderJsWrapper(
        v8::Isolate* isolate,
        v8::Handle<v8::Context> context,
        base::WeakPtr<service_manager::InterfaceProvider> remote_interfaces);

    void CallJsFactory(const ScopedJsFactory& factory,
        mojo::ScopedMessagePipeHandle pipe);

    static void ClearContext(
        const v8::WeakCallbackInfo<InterfaceProviderJsWrapper>& data);

    v8::Isolate* isolate_;
    v8::Global<v8::Context> context_;
    base::WeakPtr<service_manager::InterfaceProvider> remote_interfaces_;

    base::WeakPtrFactory<InterfaceProviderJsWrapper> weak_factory_;

    DISALLOW_COPY_AND_ASSIGN(InterfaceProviderJsWrapper);
};

} // namespace content

#endif // CONTENT_RENDERER_MOJO_INTERFACE_PROVIDER_JS_WRAPPER_H_
